Donovan McNabb may not have worked out in Washington (or Minnesota), but he sure had a successful career in Philadelphia, and now as an NFL analyst. But it was a suspect tweet about the NBA Finals today that has people questioning his general sports knowledge.

Redskins fans have a storied history of falling in love with backup quarterbacks, much as they did when they favored John Beck over Grossman, Todd Collins over Jason Cambell, and Colt Brennan over everyone. But coming off an 20-interception season, you don’t have to worry about the re-signed Rex Grossman getting the fan vote over newly-minted starter Robert Griffin III.

Former Redskins center Casey Rabach joined Holden and Danny today on The Fan and addressed what it was like playing for the team during the tumultuous season of 2010. In short, he said it was a “Freaking Nightmare.” Find out what else he said…